Hey, man
First of all congratulations for what you do, it's really cool, I would have several proposals to make and small problem on the map too!

Well you noticed my English is a ♥♥♥♥, I use google translation, so I'll pass you full of small screen and add comments below, if that goes!

First édition : OK so, before the screens I have some maps for you to impregnate places of agreement?

So this one for example: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=397476492&searchtext=metro Although well known

And this one https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=300048861&searchtext=metro

There is also "Redline" https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=649346289&searchtext=redline but the latter weighs too heavy and the doors: /

Given that https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=436653780&searchtext=RP_Stantsiya_v1b that you obviously know, But do not take this map, it is too big and the doors are bugs

If not the maps of "Metrosi" https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=635551737 for their subway stations and the long rails.

Http:/steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=674649096 4th and 5th images, the cables on the sides, I think this textures would save you some memory on the weight of the map.